https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12268926Edit ImageSaveSaveEditCropCustom TextSanitary plant. Visalia, California. Trickling filter. Sourced from the Library of Congress.View public domain image source hereMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1133 x 1200 px | 300 dpiLarge JPEG 3305 x 3500 px | 300 dpiBest Quality JPEG 4766 x 5047 px | 300 dpiTIFF 4766 x 5047 px | 300 dpi | 45.9 MBFree DownloadSanitary plant. Visalia, California. Trickling filter. Sourced from the Library of Congress.More